Good question, although I would suggest that you might want to look at taking out your own insurance if these scenarios worry you - their insurance may or may not cover you for your equipment, and you may have real problems getting your equipment past angry landlords if they have gone under owning money.

We'd also be very interested in hosting your units, we've been around in the IT services industry for decades and running data centres for many years with lots of customers from individually owned bitcoin miners through to large financial institutions. We charge Euro90/kW/month.